Obtaining optimum signal from set of directional template masks

It is examined how the responses to directional template matching masks can be interpolated to give optimum signals. Formulae are derived which cover the cases of `1-vector´ and `2-vector´ features, typified respectively by edge and line segments. `m-vectors´ with m >2 are likely to be rare. And it appears that corners and most other features should be classed as 1-vectors. These considerations mean that the solutions arrived at for 1-vectors and 2-vectors will solve the foreseeable problems of signal interpolation between mask responses. Thus a useful nonarbitrary solution has been found for determining how to calculate combined responses for n-mask operators